Windows
We must be idiots! How could we forget that houses have windows? Thieves can easily break a window to get in, right? Well, yes it is true (not the idiots part) that thieves can break windows to get into your house. It is also true that it is much easier to get in through a door. That is why 85% of break-ins happen through a door.
If you still don't believe that securing your doors makes sense, we suggest leaving your doors open or unlocked. We'd also suggest not fastening your seatbelt, brushing your teeth or eating vegetables...